为什么我会得到这个错误：“class app\laptop not found？”

Question

<?php

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', 'LaptopController@show');

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Laptop extends Model
{
    //
}

<?php

namespace App\Http\Controllers;

use App\Http\Controllers\Controller;
use app\Laptop;
class LaptopController extends Controller
{
    public function show(){
        $laptop=Laptop::all();
        echo $laptop->name;
    }
}

Answer 1

在您正在使用的控制器内部

use app\Laptop;

但它应该是

use App\Laptop;

除此之外，还有一个问题是，您正在尝试访问集合的名称:如果您只想要第一个，您应该执行laptop::first()